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| Project 3400 Roller Cam Block (Page 57/82) |
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Blacktree
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OCT 24, 11:05 AM
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Addco makes a 1" front bar for the '84-87 Fiero, and a 1-1/8" front bar for the '88 Fiero. You can buy them from Summit Racing. The Fiero Store also sells a 1" front bar for the '84-87, but nothing for the '88.
Edit to add: Rodney Dickman's "zero lash" endlinks will stiffen up the sway bar, too.[This message has been edited by Blacktree (edited 10-24-2013).]
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lou_dias
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OCT 24, 11:52 AM
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| quote | Originally posted by Blacktree:
Addco makes a 1" front bar for the '84-87 Fiero, and a 1-1/8" front bar for the '88 Fiero. You can buy them from Summit Racing. The Fiero Store also sells a 1" front bar for the '84-87, but nothing for the '88.
Edit to add: Rodney Dickman's "zero lash" endlinks will stiffen up the sway bar, too.
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Thanks! I knew there was one out there. The Fiero I had with the thicker front bar was totaled 8-10 years ago. I'm currently using the Fiero Store bars on this '87GT but I'm pretty sure my balance is off and want a thicker one up front.
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La fiera
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OCT 24, 01:58 PM
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. [This message has been edited by La fiera (edited 11-17-2013).]
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carbon
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OCT 24, 03:50 PM
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lou_dias
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NOV 08, 01:04 PM
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I've been researching some theory.
My thoughts are that the Trueleo intake provides too much airflow for the stock 3400 cam. I would need a higher lift cam to take advantage of it to increase the airflow velocity.
On the exact same dyno, my modified Fiero intake made 249 ft*lbs vs 203 ft*lbs on a MUSTANG dyno. However my peak HP RPM was ~4150 RPM... That said, my peak was 187 with the Fiero intake vs. 166 with the Trueleo on the same dyno.
I have Monday off and I'll be paying a visit to a machine shop I've dealt with in the past to see if they can perform the DAWG mod to that upper intake (glad I never sold it). With luck I will be able to get my peak to at least 4900 rpm if not a little more.
On my 'next' motor, I will definitely put in a high-lift cam and slap the Trueleo intake on that motor. Oreif's 3.4 made 205hp with the Trueleo and the H272 cam. It'll be interesting to see what the WOT roller cam with .509" of lift can do...
No - heads are not the problem. Neither is my ported lower intake manifold.
My stock Formula burns 1.5qts between 3k oil changes...that was will probably get that 'next' motor, which will be a 3.5L ...  But that's probably 2 years away...[This message has been edited by lou_dias (edited 11-08-2013).]
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joshua riedl
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NOV 08, 08:01 PM
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Do the camshaft, you know you're getting bored with the stock one. Then you'll be setup for when you decide to go with aluminum heads, just kidding, unless your going to do it.
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lou_dias
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NOV 09, 01:57 PM
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| quote | Originally posted by joshua riedl:
Do the camshaft, you know you're getting bored with the stock one. Then you'll be setup for when you decide to go with aluminum heads, just kidding, unless your going to do it. |
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Well I made 187 rwhp at ~4150 rpm and the Fiero intake neck choked me after that. That's why I went with the Trueleo intake but that killed my air velocity and made me lose power. I'm hoping the DAWG mod lets me flow to 5200. For the track I run on, because of the curves, I don't have time to rev much past 5000 rpm so I'm more about maximizing my power band in the 3000-5000 range. If I could find 1.7 roller rockers that would fit, that would help a lot with the current intake. I will probably try to get another tune in to see where I ended up. I should be in the mid to upper 170's now with the Trueleo...well, on a dynojet anyways...[This message has been edited by lou_dias (edited 11-09-2013).]
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Will
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NOV 09, 03:43 PM
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| quote | Originally posted by Will:
Thought about the 3.94 final and maybe the 2.19 second for your Getrag? |
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| quote | Originally posted by lou_dias:
No. For this race I switched back to the 255/40-16 BFG G-Force's in the back and moved my bigger wheels/tires to the front and it paid off on the back straight-away where I picked up speed since those wheels+tires have less diameter than the 275/40-17 Nittos I've been running.
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So you go with a shorter tire and think it helps, but don't want to go to shorter gears?
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Will
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NOV 09, 03:46 PM
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| quote | Originally posted by lou_dias:
I've been researching some theory.
My thoughts are that the Trueleo intake provides too much airflow for the stock 3400 cam. I would need a higher lift cam to take advantage of it to increase the airflow velocity.
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Sounds like you actually need a bigger cam. You've been rejecting that because it'll move your peak power to a higher RPM, and you think that this will slow you down because you don't see that RPM on the track.
And yet, you reject the idea of shorter gears, which will let you see that RPM on the track...
Look at the big picture... Cam and gears would make you MUCH quicker.[This message has been edited by Will (edited 11-09-2013).]
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lou_dias
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NOV 10, 02:49 AM
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Look at the actual picture. I can't change the gears so I switched back to shorter tires on the back (255/40/16). If it wasn't for my busted shift cable, I would have gave the 2nd fast car at Seekonk speeday a hell of a race on 10/13 ... In an ideal world, I'd be able to change everything to be faster. I'm not changing this engine/cam until it blows up. Same with the transmission. So until then, I can only change everything else.
Here's two of the fastest cars off the line:
http://www.youtube.com/watch?v=2YnepzvnNwI
They did about an 18.5 second lap. The Eagle Talon did a 10.9 on the 1/4 and the Eagle Summit is in the 11's. Luckily for me, their weakness is the curves.
It's tough to tell from this angle here:
http://www.youtube.com/watch?v=TBWBfVQ7Qvk
but basically, I shift into 2nd before the 1st turn and I should have been able to out-accelerate him thru the first curve but I was in neutral before the 1st curve and almost to the end of it...then I meshed into 3rd gear entering the back straight-away and you see me pick up speed.
This track is about your launch and how you handle the curves and less about gears and horsepower. I've got the launches and handling down pretty good but those shorter tires have too much backspacing and it causes my wheel to rub my spring when I go into turn 3 too fast. My 275/17/40's have 5.5" of backspacing and don't rub my spring on the outside but they hurt my launches and my speed on the back straight-away...
Here's what that AWD 38psi Talon does to the typical car off the line...if he didn't baby it going into turn 3, it wouldn't be that close:
http://www.youtube.com/watch?v=1a5HJO3XDFg
That Eagle Summit and Eagle Talon are essentially the same platform (turbo AWD DSM 1G). They are both limited in handling on the curves. I'm running the HELD 12" brake kit. I can maintain speed and brake later than them despite being out powered by a HUGE margin. The beauty of this track it that it's more like a chess match when compared to the 1/4 mile. The 1/4 mile is boring to me. If you spend money, anyone can post any time on the 1/4 mile. With the oval track, you have to be able to launch, take a turn, accelerate, brake, take a turn and then out power your opponent coming out of turn 4 without spinning out. It's totally different ballgame....so much more fun...[This message has been edited by lou_dias (edited 11-10-2013).]
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